On Mac, click Steam > Preferences to open the preferences screen. On Windows, click Steam > Settings to open the settings screen. From there, uncheck the Run Steam when my computer starts.
In the Steam Settings menu, select the Interface option in the menu on the left. How do I stop Steam from running automatically when I start my computer? With Steam open, click the. Select the “Startup” tab in your Task Manager window. Right-click on the taskbar and select “Task Manager”.
